How to solve the error code 30015-11: Office installation encountered an error

There are several steps you can take to solve the error code 30015-11:

1. Restart your computer and try installing Office again. Sometimes, a simple restart can fix the issue.
2. Check your internet connection. Make sure you have a stable internet connection and try installing Office again.
3. Disable your antivirus software temporarily. Sometimes, antivirus software can interfere with the installation process. Disable your antivirus software temporarily and try installing Office again.
4. Use the Office uninstaller tool. If you have a previous version of Office installed on your computer, use the Office uninstaller tool to remove it completely before installing the new version.
5. Use the Microsoft Support and Recovery Assistant. The Microsoft Support and Recovery Assistant can help diagnose and fix issues with Office installation. Download and run the tool to see if it can fix the error code 30015-11.